Process for stripping a layer of paint from the surface of a support

Abstract

The invention relates to a process for stripping, from the surface of a support, a layer of paint which has been formed and hardened thereon, characterized by the requirement of a phase of pre-treating said support before the formation on the latter of the layer of paint to be stripped, said treatment consisting in applying on the support a covering product, selected among the following products: a pre-treatment vinyl resin paint, a polyurethane resin paint. It is also an object of the invention to provide products and compositions to be used in said process.

I claim: 
     
       1. A process for stripping a layer of paint from a surface of a support, comprising: (i) pre-treating said support with one or more acids to oxidize the surface;   (ii) further treating said support by applying thereto a covering product which is at least one member selected from the group consisting of vinyl resin pre-treatment paints and polyurethane resin pre-treatment paints;   (iii) causing paint to contact said surface and harden thereon;   (iv) stripping said paint after having hardened said support surface by heating said support.   
     
     
       2. The process of claim 1, wherein step (iv) is followed by (v) immersing said support in a cryogenic liquid.   
     
     
       3. The process of claim 2, wherein step (v) is followed by (vi) mechanically stripping any paint still adhering to said support surface.